Any update on this issue? Faulty crank position sensors can also cause a crank no start issue. I went through this issue on a GM I had. I had a remote start installed and a few weeks later started having crank no start issues, but no check engine light. I thought the remote start system had something to do with it and ended up pulling the whole thing out to still have the issue. Turned out to be the crank position sensor.
However, as stated in other posts, double check your connections everywhere you touched. This is step 1, retrace your steps. Hook up an OBD reader if you have access to one. Just because it isn’t showing a check engine light doesn’t mean there isn’t a code stored in the computer, which may help give you an idea where to start looking.
Check for fuel pressure at the rail. Make sure all vacuum lines are connected. IAC should be plugged in and operating. MAF plugged in. Verify spark plugs and coil pack are are plugged in tight. Check visible grounds. Check fuel pump relay, test it or swap it with another relay to test.
Check your battery and alternator voltages. Again as mentioned, just because it can crank doesn’t mean it has the power to start. If you’re smelling fuel while trying to continually start, check your plugs again and make sure they are not fouled with excessive fuel. Too much fuel and wet plugs won’t ignite.
The most basic and embarrassing one of them all….is there fuel in it? I had a tech at work that replaced a fuel tank and pump and kept trying to start the vehicle and it wouldn’t fire. Another tech banged on the hollow tank and asked “did you put gas in it?”